Contents
1 Safety Recommendations ....................................................................... 10
2 About N715-EA ........................................................................................ 11
2.1 Product Overview ........................................................................................................................ 11
2.2 Block Diagram ............................................................................................................................. 11
2.3 Basic Features ........................................................................................................................... 12
3 Reference Standards ............................................................................... 15
4 Module Pins ............................................................................................. 16
4.1 Pad Lay-out ................................................................................................................................ 16
4.2 Pin Descriptions ......................................................................................................................... 17
5 Application Interfaces .............................................................................. 28
5.1 Power Interfaces ........................................................................................................................ 28
5.1.1 VBAT .................................................................................................................................. 28
5.1.2 VDD_1P8 ........................................................................................................................... 33
5.2 Control Interfaces ....................................................................................................................... 33
5.2.1 Power-on ........................................................................................................................... 33
5.2.2 Power-off ........................................................................................................................... 36
5.2.3 Reset ................................................................................................................................. 37
5.3 Peripheral Interfaces .................................................................................................................. 39
5.3.1 USB ................................................................................................................................... 39
5.3.2 UART ................................................................................................................................. 40
5.3.3 USIM .................................................................................................................................. 44
5.3.4 SDIO .................................................................................................................................. 47
5.3.5 SDCard (Signal Multiplexing) ............................................................................................ 48
5.3.6 PCM ................................................................................................................................... 49
5.3.7 SPI ..................................................................................................................................... 50
5.3.8 I2C ..................................................................................................................................... 51
5.4 Audio Interfaces ......................................................................................................................... 52
5.4.1 Analog Audio Input............................................................................................................. 52
5.4.2 Analog Audio Output .......................................................................................................... 53
5.4.3 Headset Interface .............................................................................................................. 55
5.5 Video Interfaces ......................................................................................................................... 58
5.5.1 LCD ................................................................................................................................... 58
5.5.2 Camera .............................................................................................................................. 59
5.6 Radio Frequency ........................................................................................................................ 59
5.6.1 ANT_MAINAntenna Interfaces .......................................................................................... 59
5.6.2 ANT_WLAN_BT ................................................................................................................. 61
5.6.3 Antenna Assembling .......................................................................................................... 61
5.7 GPIO Interfaces ......................................................................................................................... 64
5.8 Multi-Function Interfaces ............................................................................................................ 64
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